Wristwatch



FIG. 1 is a front perspective view of a wristwatch showing my new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear view thereof;

FIG. 8 is a rear right perspective view thereof;

FIG. 9 is a front left perspective view thereof; and,

FIG. 10 is a rear left perspective view thereof.

The broken lines in FIGS. 7, 8 and 10 are used to show portions of the wristwatch that do not form part of the claimed design. 

CLAIM The ornamental design for a wristwatch, as shown and described. 